<template>
  <div class="login">
    <el-form ref="loginFormRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">{{ title }}</h3>
      <el-form-item prop="user_name">
        <el-input
          v-model="loginForm.user_name"
          type="text"
          auto-complete="off"
          placeholder="账号"
          @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 55%"
          @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img" alt="" />
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin: 0 0 25px 0">记住密码</el-checkbox>
      <el-form-item style="width: 100%">
        <el-button :loading="loading" size="medium" type="primary" style="width: 100%" @click.native.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2018-2024 b5net.com All Rights Reserved.</span>
    </div>
  </div>
</template>

<script>
import { WEB_TITLE} from '@/config'
import { getCodeImgApi, loginApi } from '@/api/login'
import { encrypt, decrypt } from '@/plugins/jsencrypt'

export default {
  name: 'Login',
  data() {
    return {
      title: WEB_TITLE,
      codeUrl: '',
      loginForm: {
        user_name: '',
        password: '',
        rememberMe: false,
        code: '',
        uuid: ''
      },
      loginRules: {
        user_name: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
        password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
        code: [{ required: true, trigger: 'change', message: '请输入验证码' }]
      },
      loading: false,
      redirect: ''
    }
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query?.redirect || ''
      },
      immediate: true
    }
  },
  created() {
    this.getCode()
    this.getCache()
  },
  methods: {
    getCode() {
      getCodeImgApi().then(data => {
        this.codeUrl = data.img || ''
        this.loginForm.uuid = data.uuid || ''
      })
    },
    getCache() {
      const user_name = this.$cache.local().get('vv__temp_user_name')
      const password = this.$cache.local().get('vv__temp_password')
      this.loginForm.user_name = user_name || this.loginForm.user_name
      this.loginForm.password = password ? decrypt(password) : this.loginForm.password
      this.loginForm.rememberMe = !!user_name
    },
    async handleLogin() {
      if (this.loading) return
      const valid = await this.$refs.loginFormRef.validate()
      if (!valid) return
      this.loading = true
      try {
        const data = await loginApi(this.loginForm)
        if (this.loginForm.rememberMe) {
          this.$cache.local().set('vv__temp_user_name', this.loginForm.user_name, 30 * 24 * 60 * 60)
          this.$cache.local().set('vv__temp_password', encrypt(this.loginForm.password), 30 * 24 * 60 * 60)
        } else {
          this.$cache.local().clear('vv__temp_user_name')
          this.$cache.local().clear('vv__temp_password')
        }
        this.$store
          .dispatch('user/Login', data?.token || '')
          .then(() => {
            this.$router.push({ path: this.redirect || '/' })
          })
          .catch(err => {
            this.$modal.msgError(err)
          })
      } catch (e) {
        this.getCode()
      }
      this.loading = false
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
  .login {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background-image: url('~@/assets/images/login-background.jpg');
    background-size: cover;
  }
  .title {
    margin: 0 auto 30px auto;
    text-align: center;
    color: #707070;
  }

  .login-form {
    border-radius: 6px;
    background: #ffffff;
    width: 400px;
    padding: 25px 25px 5px 25px;
    .el-input {
      height: 38px;
      input {
        height: 38px;
      }
    }
    .input-icon {
      height: 39px;
      width: 14px;
      margin-left: 2px;
    }
  }
  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }
  .login-code {
    width: calc(45% - 10px);
    height: 38px;
    float: right;
    img {
      width: 100%;
      height: 38px;
      cursor: pointer;
      vertical-align: middle;
    }
  }
  .el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial, serif;
    font-size: 12px;
    letter-spacing: 1px;
  }
  .login-code-img {
    height: 38px;
  }
</style>
